Ex - Coordinate Transformation; Table 21: Coordinate Transformation Processing Flags - Teledyne WORKHORSE Operation Manual

WorkHorse H-ADCP Operation Manual
If the EZ Temperature field = one, the H-ADCP overrides the manually set ET value and uses
temperature from the transducer's temperature sensor. If the sensor is not available, the H-
ADCP uses the manual ET setting.
EX – Coordinate Transformation
Purpose Sets the coordinate transformation processing flags.
Format EXxxptb
Range xx = Transformation
p = Pitch and Roll
t = 2 beam solutions
b = Bin mapping (not used)
Default EX11110
Recommended Setting. The default setting for this command is recommended for most applications.
Description EX sets firmware switches that control the coordinate transformation processing for ve-
locity and percent-good data.
Table 21: Coordinate Transformation Processing Flags
Setting Description
EX00xxx No transformation. Radial beam coordinates, I.E., 1, 2, 3, 4. Heading/Pitch/Roll not applied.
EX01xxx Instrument coordinates. X, Y, Z vectors relative to the H-ADCP. Heading/Pitch/Roll not applied.
EX10xxx Ship coordinates (Note 1) X, Y, Z vectors relative to the ship. Heading not applied. EA-command used, but not the EB-
command. If Bit 3 of the EX-command is a 1, then Pitch/Roll applied.
EX11xxx Earth coordinates (Note 1) East, North, Vertical vectors relative to Earth. Heading applied. EA and EB-commands used. If
Bit 3 of the EX-command is a 1, then Pitch/Roll applied.
EXxx1xx Use tilts (pitch and roll) in transformation (see Note 2)
EXxxx1x Allows 2-beam solutions if one beam is below the correlation threshold set by WC
1. For ship and earth-coordinate transformations to work properly, you must set the Heading
Alignment (EA) and Heading Bias (EB) correctly. You also must ensure that the tilt and heading
sensors are active (EZ).
2. Setting EX bit 3 (Use Tilts) to 0 lets you collect tilt data without using it in the ship or earth-
coordinate transformations.
3. Each H-ADCP uses its own beam calibration matrix to correct data for beam pointing errors
(e.g., if the beams erroneously point toward 21 degrees instead of 20 degrees). Correction is
applied when the data are converted from beam coordinates to earth coordinates. If you
output beam-coordinate data, you will need to apply the beam corrections yourself if you want
the best possible data or use the SurfaceView software.
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
May 2015
Page 151